Ah, five rings — you have one more than the four, and yet one less than the six.
A song titled *“The Song of the Five Ringsâ€* echoes the daily journey of Beijing residents. As city roads become increasingly crowded, is there a smarter way to navigate through traffic and get that green light?
Faced with the chaos of urban congestion and endless streams of cars that seem to ignore the rules, do you long for the freedom of “doing your own thing� Have you ever stood at a red light, watching it turn green, only to find yourself stuck in line again? On your way to work, you’re stuck in slow motion, unable to reach your destination quickly. Because of the traffic, the thrill of driving has faded away.
Introducing the Zigbee communication solution for intelligent transportation.
In fact, our country has been actively promoting the development of intelligent transportation systems, working hard to regulate traffic order and improve road safety infrastructure. But what exactly does an intelligent transportation system look like?
At the heart of the system is the traffic command center, which manages multiple subsystems. Each of these subsystems operates independently but also collaborates to ensure smooth traffic flow. These systems are built on hardware devices such as controllers and sensors, forming the backbone of modern traffic management.
The most common feature today is the intelligent traffic signal control system. It not only manages the timing of red, yellow, and green lights for vehicles and pedestrians but also adjusts its settings based on traffic volume. This helps maintain order, increase intersection efficiency, and prevent accidents.
With the rapid growth of wireless technology, we're entering an era of the "Internet of Everything." Many domestic companies have introduced intelligent traffic control solutions using wireless technologies, receiving positive public feedback.
Compared to traditional wired systems, wireless communication offers several advantages:
1. **Cost Efficiency**: Traditional systems require laying underground cables and signal lines, while wireless solutions only need power and no extra wiring, significantly reducing labor and material costs.
2. **Construction Impact**: Wired systems often cause major road damage, especially during renovations or additions. Wireless solutions are much easier to install and modify, minimizing disruption.
3. **Maintenance**: Wireless systems are simpler to maintain and repair, making equipment replacement faster and more efficient.
4. **Speed and Safety**: Wireless projects can be completed quickly with minimal impact on traffic, ensuring safer and smoother operations.
Currently, Zigbee and LoRa are the two most commonly used wireless technologies in intelligent transportation. Today, we'll focus on the Zigbee communication solution.
Zigbee is a short-range, low-power, low-cost, and low-data-rate wireless communication technology. It's ideal for small data transfers and can be embedded in various devices. It also supports location tracking.
Zigbee is widely used in smart cities and industrial applications due to its unique features:
- **Low Power Consumption**: With a maximum transmit current of just 148mA and sleep mode capabilities, Zigbee devices can last up to 6 months to 2 years on two AAA batteries.
- **Low Cost**: Zigbee modules cost around $3, and the protocol is royalty-free, making it a cost-effective choice.
- **Short Delay**: Zigbee has very low latency, making it suitable for time-sensitive applications like industrial control.
- **High Network Capacity**: A single Zigbee network can support up to 254 devices, offering flexible and scalable deployment.
- **Reliability**: It uses collision avoidance and dedicated time slots to ensure data integrity. Each transmission is acknowledged, and retransmission is possible if needed.
- **Security**: Zigbee includes CRC-based packet integrity checks, authentication, and encryption, allowing each application to define its own security level.
ZLG Zhiyuan Electronics has developed a series of low-power, high-performance Zigbee modules based on the NXP JN5168 microcontroller. These modules provide complete integration solutions based on the IEEE 802.15.4 standard.
These products have been tested and certified by leading RF instruments. Combining years of market experience with real user needs, the complex communication protocols are integrated into the built-in MCU, simplifying product design and accelerating time-to-market. This helps reduce costs, enhance competitiveness, and seize new opportunities in the growing smart transportation industry.
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